iOS UITextField禁用剪切板

-(BOOL)canPerformAction:(SEL)action withSender:(id)sender{

//    NSLog(@"canPerformAction");

//    NSLog(@"%@", sender);

    UIMenuController *menuController = [UIMenuController sharedMenuController];

    if(menuController) {

        [UIMenuController sharedMenuController].menuVisible = NO;

    }

    if(@available(iOS13.0, *)) {

        [menuController hideMenu];

    }else{

        [menuController setMenuVisible:NO];

        // Fallback on earlier versions

    }

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(menushow) name:@"UIMenuControllerDidShowMenuNotification" object:nil];

    return NO;

}

- (void) menushow {

    UIMenuController *menuController = [UIMenuController sharedMenuController];

    if(menuController) {

        [[UIMenuController sharedMenuController] setMenuVisible:NO];

    }

}

我的项目中所有ViewController都继承自BasicViewController，所以只需要在BasicViewController中添加方法即可

网络查询的方法中没有通知事件的监听，但在实际使用中不咋好用，调试后发现可以在通知事件中修改，通知事件名称来自UIMenuController点进去那里

参考文章：https://www.jianshu.com/p/274428ed7a2c